Laterognathism의 술후 전방하악골상행지경사도 변화에 관한 정모두부방사선학적 연구
The change of frontal ramal inclination (FRI) after orthognathic surgery with laterognathism: posteroanterior cephalometric study
2
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
Introduction: To compare the change in frontal ramal inclination (FRI) in laterognathism after orthognathic surgery. Materials and Methods: Twenty four patients (10 men, 14 women; mean age, 22.8±5.2 years) with minimal facial canting (≤2 mm) and apparent menton deviation (5.9±2.4 mm) who had been operated on to correct facial asymmetry and skeletal CIII malocclusion, were selected. On a preoperative posteroanterior (PA) cephalogram, the FRI of the deviated side and non deviated side, L1 deviation amounts and menton deviation amounts were measured. The FRI differences between both sides were compared, and the correlations between the measured deviated elements and the FRI differences were analyzed. On a postoperative PA cephalogram, the shifting amount of L1, shifting amount of L7 and FRI of both sides were measured,and the correlations between the shifting elements and the change in FRI were analyzed. Results: On the preoperative PA cephalogram, the FRI of the non deviated side was significantly greater than those of the deviated side. The differences in FRI, with a menton deviation amount showed a significant correlation. On the postoperative PA cephalogram, the FRI differences between the deviated and non deviated side were decreased significantly and mandibular transverse movement toward central position was noted. The mean shifting amounts of L7 were associated with the amount of change in the deviated side of FRI. Conclusion: Transverse shifting of the mandible through orthognathic surgery decreases the FRI difference, which showed laterognathism, and improves the facial contour.
Abstract
Introduction: To compare the change in frontal ramal inclination (FRI) in laterognathism after orthognathic surgery. Materials and Methods: Twenty four patients (10 men, 14 women; mean age, 22.8±5.2 years) with minimal facial canting (≤2 mm) and apparent menton deviation (5.9±2.4 mm) who had been operated on to correct facial asymmetry and skeletal CIII malocclusion, were selected. On a preoperative posteroanterior (PA) cephalogram, the FRI of the deviated side and non deviated side, L1 deviation amounts and menton deviation amounts were measured. The FRI differences between both sides were compared, and the correlations between the measured deviated elements and the FRI differences were analyzed. On a postoperative PA cephalogram, the shifting amount of L1, shifting amount of L7 and FRI of both sides were measured,and the correlations between the shifting elements and the change in FRI were analyzed. Results: On the preoperative PA cephalogram, the FRI of the non deviated side was significantly greater than those of the deviated side. The differences in FRI, with a menton deviation amount showed a significant correlation. On the postoperative PA cephalogram, the FRI differences between the deviated and non deviated side were decreased significantly and mandibular transverse movement toward central position was noted. The mean shifting amounts of L7 were associated with the amount of change in the deviated side of FRI. Conclusion: Transverse shifting of the mandible through orthognathic surgery decreases the FRI difference, which showed laterognathism, and improves the facial contour.
참고문헌 (23)
- Komori M, "Averageness or symmetry: which is more important for facial attractiveness", Acta Psychol (Amst), 131, pp.136~142 (2009)
- Jones BC, "The role of symmetry in attraction to average faces", Percept Psychophys, 69, pp.1273~1277 (2007)
- Padwa BL, "Occlusal cant in the frontal plane as a reflection of facial asymmetry", J Oral Maxillofac Surg, 55, pp.811~816 (1997)
- Peck S, "Skeletal asymmetry in esthetically pleasing faces", Angle Orthod, 61, pp.43~48 (1991)
- Phillips C, "Dentofacial disharmony: psychological status of patients seeking treatment consultation", Angle Orthod, 68, pp.547~556 (1998)
- Nitzan DW, "TChaes apc linN-. ical characteristics of condylar hyperplasia: experience with 61 patients", J Oral Maxillofac Surg, 66, pp.312~318 (2008)
- Park SH, "A proposal for a new analysis of craniofacial morphology by 3-dimensional computed tomography", Am J Orthod Dentofacial Orthop, 129(600), pp.e23~e34 (2006)
- Hayashi K, "Morphologic characteristics of the dentition and palate in cases of skeletal asymmetry", Angle Orthod, 74, pp.26~30 (2004)
- Nojima K, "Tooth axis and skeletal structures in mandibular molar vertical sections in jaw deformity with facial asymmetry using MPR images", Bull Tokyo Dent Coll, 48, pp.171~176 (2007)
- Langberg BJ, "Transverse skeletal and dental asymmetry in adults with unilateral lingual posterior crossbite", Am J Orthod Dentofacial Orthop, 127, pp.6~15 (2005)
- Ishizaki K, "Morphologic, functional, and occlusal characterization of mandibular lateral displacement malocclusion", Am J Orthod Dentofacial Orthop, 137(454), pp.e1~e9 (2010)
- Hwang HS, "Maxillofacial 3-D image analysis for the diagnosis of facial asymmetry", J Korean Dent Assoc, 42, pp.76~83 (2004)
- 은춘선, "이부편위자의 하악골상행지 경사에 관한정모두부방사선학적 연구", 대한치과교정학회지, 36(5), pp.380~387 (2006), 대한치과교정학회
- Hwang HS, "Maxillofacial 3-dimensional image analysis for the diagnosis of facial asymmetry", AMERICAN JOURNAL OF ORTHODONTICS AND DENTOFACIAL ORTHOPEDICS, 130(6), pp.779~785 (2006), MOSBY-ELSEVIER
- Sekiya T, "Elimination of transverse dental compensation is critical for treatment of patients with severe facial asymmetry", Am J Orthod Dentofacial Orthop, 137, pp.552~562 (2010)
- Hashimoto T, "Mandibular deviation and canted maxillary occlusal plane treated with miniscrews and intraoral vertical ramus osteotomy: functional and morphologic changes", Am J Orthod Dentofacial Orthop, 136, pp.868~877 (2009)
- Pinto AS, "Morphological and positional asymmetries of young children with functional unilateral posterior crossbite", Am J Orthod Dentofacial Orthop, 120, pp.513~520 (2001)
- Goto TK, "Size and orientation of masticatory muscles in patients with mandibular laterognathism", J Dent Res, 85, pp.552~6 (2006)
- Yang HJ, "Interferences between mandibular proximal and distal segments in orthognathic surgery for patients with asymmetric mandibular prognathism depending on different osteotomy techniques", Oral Surg Oral Med Oral Pathol Oral Radiol Endod, 110, pp.18~24 (2010)
- Buranastidporn B, "Temporomandibular joint internal derangement in mandibular asymmetry. What is the relationship?", Eur J Orthod, 28, pp.83~88 (2006)
- Uysal T, "Condylar and ramal vertical asymmetry in unilateral and bilateral posterior crossbite patients and a normal occlusion sample", Am J Orthod Dentofacial Orthop, 136, pp.37~43 (2009)
- Akahane Y, "Morphology of the temporomandibular joint in skeletal class iii symmetrical and asymmetrical cases: a study by cephalometric laminography", J Orthod, 28, pp.119~128 (2001)
- Tallents RH, "Angular and linear comparisons with unilateral mandibular asymmetry", J Craniomandib Disord, 5, pp.135~142 (1991)